The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2005
Filed:
Nov. 17, 2003
Ian D. Burdett, Charleston, WV (US);
Ping P. Cai, Hurricane, WV (US);
Ronald Steven Eisinger, Charleston, WV (US);
Mark Gregory Goode, Hurricane, WV (US);
F. David Hussein, Cross Lanes, WV (US);
Michael Allen Kinnan, Charleston, WV (US);
Michael Elroy Muhle, Kingwood, TX (US);
James L. Swecker, Ii, Hurricane, WV (US);
Ian D. Burdett, Charleston, WV (US);
Ping P. Cai, Hurricane, WV (US);
Ronald Steven Eisinger, Charleston, WV (US);
Mark Gregory Goode, Hurricane, WV (US);
F. David Hussein, Cross Lanes, WV (US);
Michael Allen Kinnan, Charleston, WV (US);
Michael Elroy Muhle, Kingwood, TX (US);
James L. Swecker, II, Hurricane, WV (US);
Univation Technologies, LLC, Houston, TX (US);
Abstract
This invention relates to processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, the invention relates to processes for transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems, metallocene catalyst systems and chromium-based catalyst systems.